// interfaces/AdaptedRandomDoubles.java
// (c)2017 MindView LLC: see Copyright.txt
// We make no guarantees that this code is fit for any purpose.
// Visit http://OnJava8.com for more book information.
// Creating an adapter with inheritance

import java.nio.CharBuffer;
import java.util.Scanner;

public class AdaptedRandomDoubles
        implements RandomDoubles, Readable {
    private int count;

    public AdaptedRandomDoubles(int count) {
        this.count = count;
    }

    @Override
    public int read(CharBuffer cb) {
        if (count-- == 0)
            return -1;
        String result = Double.toString(next()) + " ";
        cb.append(result);
        return result.length();
    }

    public static void main(String[] args) {
        Scanner s =
                new Scanner(new AdaptedRandomDoubles(7));
        while (s.hasNextDouble())
            System.out.print(s.nextDouble() + " ");
    }
}
/* Output:
0.7271157860730044 0.5309454508634242
0.16020656493302599 0.18847866977771732
0.5166020801268457 0.2678662084200585
0.2613610344283964
*/
